There are several registry keys which control the windows 7 taskbar some of the keys have been migrated from windows xp which had a much better behaved taskbar. There is a generic fault in the microsoft programming for this bar. It is common for it to disappear completely and can even happen windows 7 updates making system restore the easiest option. Running explorer.exe will not always bring it back, and even a reboot may not prove successful. Microsoft blames the erratic behaviour of their taskbar on third party pop up reminders from the taskbar. This is "poppycock" their operating system should insulatel anything as important and integral as the taskbar. Microsoft should be ashamed for not fixing a problem which has been going on now since the inception of Windows 7. The only decent operating system they have is windows xp and thats only because its been out so long now even their dullard programmers have gotten around to understanding it.
You will not be able to fix this problem from the registry alone as the operating shell is At Fault.
Hkey_dyn_data
Yes!
restart your computer
Windows vista and 7 %system root%/system32/config/ ie: C:\system32\config
There are a vast array of highly effective registry scanners which can be used with Windows 7. Examples of good, free scanners include JetClean and Wise Registry Cleaner.
The programs that are used to perform a registry scan in Windows 7 are ones that are all installed as part of the windows 7 installation. They are usually executable files and they work by checking that the registry has files it ought to have and that it does not have virus or malware files.
Right click on the taskbar (in a blank space) click properties and there should be an option on that window to change the taskbar's position
Files called "hives".
Desktop
Task manager accessed from right clicking the taskbar.
its actually pretty simple, all you have to do is reboot your computer, my computer is windows 7, but i bet it will still work on windows XP though
My best bet is to reload the operating system, or go with windows 7